Sonar/Sound Forge Users questions

I downloaded the demo version for Sound Forge, and it seems to be a very good program, but could some of you guys who use both point out exactly what you use SF for, and how you integrate it into your workflow.

What special tools do SF have that differentiate it from Sonar as a Mastering tool?

I really would like a program (that isn't as hard as Quantum Physics) that I can do a pretty decent job of Mastering on.